Key: Yes

Column type: Integer

Linked: No

The identifier for the respondent associated with this response. The identifier is unique within each project within the database. The Serial column stores the Respondent.Serial system variable. When a record is written, Relational MR Database CDSC generates an error if the serial number already exists for the same project within the database, and generates a new serial number if Respondent.Serial does not exist or is blank.

Key: Yes

Column type: Integer

Linked: Variables.VariableID

The ID of the variable to which this response corresponds.

Key: Yes

Column type: Smallint

Linked: No

For categorical variables, the order in which responses are chosen. The value is auto-incrementing and provides a unique primary key. No conclusions should be drawn from the numbers in this column (the order is not consistently assigned). The order is indexed from 0. For non-categorical responses, this should always be set to 0.

Key: No

Column type: Nvarchar

Linked: No

The value for Text type responses. The SQL Server row size limit means that the maximum number of characters is 4000 characters.

Key: No

Column type: Float

Linked: No

The value for Real type responses.

Key: No

Column type: Datetime

Linked: No

The value for Date type responses.

Key: No

Column type: Image

Linked: No

The value for Object type responses. The actual database type for this column varies. In SQL Server it is an image column.